There're 11 kids in Setsu's school who have special quirks and characteristics, called Oddman. Setsu wanted to date the only male Oddman, Itami, and so she proceeded to challenge all other Oddman since they were his ex-girlfriends. In the process, she made several Oddman fall for her instead.

A more overtly lewd and weird, gender-flipped "Scott Pilgrim vs. the World". Simple enough. Despite being kind of derivative in that regard (something even acknowledged in one of the chapters), it's got the usual Sayman eccentricity that's always good fun. Is it a parody? I genuinely can't tell. But the cast of characters is as bizarre as you'd expect, and the whole thing progresses with an innocent sense of fun despite being, from the very first page, pretty depraved.